Change in diagnostic cardiovascular testing in 2021 compared with
prepandemic procedure baseline volumes. Chart compares the median
percentage change in procedure volumes of U.S. (represented by U.S.
flag), NUHIC (represented by gold bars), and all non-U.S. (represented
by world globe) facilities from March 2019 to April 2021. Percentage
change represents the median of the percentage change values of all
individual facilities in each category. Procedure types on the vertical
axis are shown in descending order of percentage change for all non-U.S.
facilities. CAC = coronary artery calcium, CCTA = coronary CT
angiography, ECG = electrocardiography, Echo = echocardiography, ICA =
invasive coronary angiography, NUHIC = non-U.S. high-income country, TEE
= transesophageal echocardiography, TTE = transthoracic
echocardiography.